Click the barrel of Cask-Strength Gnomish Spirits next to Tinker Thermald in order to zone into A Dream of Clockwork. He is inside a building that is behind the Tinkerfest merchants, and beside a large clockwork spider and a Mender / Forge.

Speak to a dream figment ( -250, -16, 170 ) /waypoint -249.75, -16.47, 170.45, who asks for your help in repairing a valuable clockwork. Unscrupulous adventurers have split up the pieces, but probably are not too far away. Recover the pieces!